Criminals don't like it when they are caught.

Books should just have ratings like movies. It would make finding interesting literature easier for everyone involved.

It would be nice to be able to pick up a work of fiction and not run into a homosexual gangbang halfway through the second chapter.

And for those who want to read that kind of thing they will be able to find it more easily.

Would there be a website, other than a porn site, that would host the images from one of these corruption manuals?

He should be charged with life in prison. Let him give warnings via media to others. It will help stop this perversion while he cries like a baby in front of cameras.